Samuel g



(No Model.)

S. G. CABELL.

MEANS POR PREVENTING INGRUSTATION IN STEAM BOILERS. No. 409,136. Patented Aug. 13, 1889.

@witnesses wif/W M @Awa l, 3&9 @Moz/MMT? UNITED :STATES PATENT. OFFICE.

SAMUEL G. CABEIIL, OF vZVASHINGTON, DISTRICT OF COLUMBIA.

YMEANS FOR PREVENTING INCRUS'II'ATIO'N IN STEM-BOILERS.

SPEGIFICATION forming part of Letters Iatent No. 409,136, dated August 13, 1889. Application filed June 25, 1889. Serial No. 315,567. (No model.)

To aZZ whom it may co7z-cern.-.

Bc it known that I, SAMUEL -G. CABELL, a citizen of the United States, residing at lVashington, in the District of Columbia, have in- `points or projections extending ,intovand across the space within the walls. Y

In the drawings I have illustrated a convenient form of apparatus involving my invention for purifying feed-Water and other liquids, ir. which- Vl."igure l .isa central vertical section showi ing an apparatus involving my invention arranged in an upright position. Fig. 2` is a similar section arranged horizontally. Fig. 3 is aplan of one of therings and its inwardlyprojecting magnetic or pole "points, and Fig. 4 1s a sectlonal detail.

-A is a tubular vessel or conduitof any suitable material, aud a a are respectively inlet audeduction passages. i V

l B are rings of magnetic material, preferably of soft or .malleable iron, each armed with a series of inward magnetic projections or points b h. These points may'extend to or beyond the center and in any direction across.

the space within the rings, as maybe desired. 'lherings may be separated from each other by interposed rings of non-magnetic material, as shown by heavy lines, Fig. 2', and they may be severed diametrically and have nonmagnetic pieces' interposed' and theparts doweled together, as shown at b h', when expedient or d esirable. The conduit or 'vessel may be of any desired lengt-h and may be aranged 'in any suitable direction.

In Fig. 1 I have 'shown4 the'vessel in an upright position and made up of a plurality of sections of cylinder and having theinlet near the bottoni, the outlet at the top, and

a settling-chamber a2 belowthe inlet, with a drain-cock leading therefrom.l A For convenience of manufacture I provide flanges c13 a. at the extremities ot` the tube sections, by means of which they may be bolted together. They also serve as shoulders, against which the coils of the helix may be supported.

A ringof brass or other non-magnetic material, or a neck-like section, as D, is by preference interposed between the vflanged tubesections to divide the conduit into separate magnetic sections. The inward projections may be hard-steel-permanent magnets, or they may be of softiron 'energized by a magnetic helix. The necessary conditionot' the points is that they be magnetic.

I have shown around and upon .the conduit or vessel a helix C, of insulated wire, in circuit with a source of electricity for periodically charging the hard-steelpoints to make them magnetic, or foiconstantly energizing such points, whether steel or iron.

In usev as a feed-water purifier the vesselA is arranged upon a suitable support between the water-supply and the mud-drum of a steam-boiler, and connections made with iulet and eduetion passages, so as to cause the feed-water to pass through said vessel'to the circulation in the boiler.

, Obviously, one of the heads or ends ot the vessel may be omitted and the device suspended by a suitable hollow neck in a boiler or other vessel for aleeting and purifying the contents with magnetism.

Ilavingdescrib'ed `my invention. and the` manner of applying the same, what I claim 1. The combination of a hollow vessel or conduit made 'up of a plurality ot' sections having interposed non-magnetic rings and a plurality of magnetic points or projections extending into and across the space. within the walls of said vessel, substantially as described. l 2. l'lhecombination of a' hollow vessel and a plurality of rings, each earrfing' a'p'lural.-

ity ot` magnetic points, extending into and lacross the spacewithin the rings, substantially as described.

In testimony whereof I allix my signal ure in the presence of two. witnesses.

SAMUEL e. cABELL. Witnesses:

' H. B. ZEvIcLv,

WM. M. S'rocunmnon.

TOO 

